AF133 Datasheet | National Semiconductor

~National ~ Semiconductor Active Filters AF133/AF134 PCM Transmit/Receive- Filters General Description The AF133 and AF134 filter circuits are specifically designed to meet the stringent requirements of the telephone industry. Special attention has been given not only to the electrical filtering requirements of the 03 channel bank, but also to the physical size, environ- mental, life and cost requirements. The filters are manufactured using a well understood ;)nd dependable thick film technology using laser trim- med resistors and the highest quality ponents. Features - No external ponents required - Active laser trimmed - Consistent uniform product - Insensitive to time and...